V8 Quattro V8-3562cc 3.6L DOHC (PT) (1990)
Transmission Position Switch/Sensor: Description and Operation
The Shift Lever Position Signal is connected to pin 42 of the Motronic control module, the signal is directional IN only (PIN 42 - INPUT ONLY).
The shift lever position signal comes from the transmission's multi-function switch. Idle speed is reduced after selection of a driving range in order to
reduce the vehicle's tendency to creep.